Chemical spray damage

This is what happens when you spray a plant for mealy bug and put the plant back on the bench in full sun.

The plant is M.uncinata P 477 and has a rule I would of put it under the bench for a few days. It does not happen much but I do fine that it is these green bodied plants from Series Mammillaria that suffer this kind of damage most of all.

Oh thats sad, but a good warning about the potential that the instecticides and miticides we use can have their downsides as well.I try to spray in the evening, so that by morning the plants have dried enough.We don't have a thread on what insecticides and miticides people use for mealy bugs, red spider mite and other pests such as thrips. I'll start one.